Pith Number

pith:DFBVHGDV

pith:2011:DFBVHGDVRFCDHKHSEI2AP4LD7G

not attested not anchored not stored refs pending

The Gradients in the 47 Tuc Red Giant Branch Bump and Horizontal Branch are Consistent With a Centrally-Concentrated, Helium-Enriched Second Stellar Generation

A. Gould, D. M. Nataf, M.H. Pinsonneault, P.B. Stetson

arxiv:1102.3916 v1 · 2011-02-18 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DFBVHGDVRFCDHKHSEI2AP4LD7G}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:03:09.233390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1943539875894433a8f2223407f163f9a7151e1f0d4e76fa8f434f4aa2b5f005

Aliases

arxiv: 1102.3916 · arxiv_version: 1102.3916v1 · doi: 10.48550/arxiv.1102.3916 · pith_short_12: DFBVHGDVRFCD · pith_short_16: DFBVHGDVRFCDHKHS · pith_short_8: DFBVHGDV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DFBVHGDVRFCDHKHSEI2AP4LD7G \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1943539875894433a8f2223407f163f9a7151e1f0d4e76fa8f434f4aa2b5f005

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fa4180da273f3ff930c9c242a329ee42b382795f2a89fa65ec328965a1fd54e",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-02-18T21:00:04Z",
    "title_canon_sha256": "d764b1151a0526c961cec1f832f125261fdb1396917b45a9558d5e95ee618a64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3916",
    "kind": "arxiv",
    "version": 1
  }
}